Richard wayland smith



(No Model.)

B. W. SMITH. MONKEY WRENGH.

No. 431,236. Patented July 1, 1890 MIHmrnw Q a i1 7" a AWW l/llll Q /-Ill lmmmmllln WITNESSES: INVENTOR A; ATTO H N EYS UNITED STATES PATENT OFFICE.

RICHARD NVAYLAND SMITH, OF KEN WOOD, NEIV YORK, ASSIGNOR OF ONE-HALF TO FRANCIS IVAYLAND SMITH, OF SAME PLACE.

MONKEY-WRENCH.

SPECIFICATION forming'part of Letters Patent No. 431,236, dated July 1, 1890.

Applicatioh filed March 5, 1890. $erial No. 342,700. (No model.)

To all whom it may concern.-

Be it known that I, RICHARD \VAYLAND SMITH, of Kenwood, in the county of Madison, in the State of New York, have invented new and useful Improvements in Monkey- Wrenches, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to the class of menkey-wrenches which have the adjustable jaw hinged to the shank of the stationary jaw; and the invention consists in an improved construction and combinations of parts, constituting a monkey wrench of superior strength, all as hereinafter more fully described, and set forth in the claim.

In the annexed drawings, Figure l is a side View of a wrench embodying my invention. Fig. 2 is a view of the back of the wrench. Fig. 3 is a longitudinal section on line as as, Fig. 2; and Figs. A and 5 are transverse sections, respectively, on lines y yand z c, Fig. 3.

Similar letters of reference indicate corresponding parts.

A represents the stock of the wrench provided with the usual handle I, and B denotes the stationary jaw, which is rigidly attached to or integral with the stock A. Said stock is formed with the jaw B on one side and with the rearwardly-projecting heel B at the base of the jaw, and to said heel I pivot or hinge a holder D at the rear of its lower end, as shown at h, so as to allow the latter to swing rearward from the fixed jaw B, as illustrated by dotted lines in Fig. 1 of the drawings, and to lie with its entire length in direct contact with the back of the stationary jaw and with its end resting directly on the top of the stock A when in its normal position, as shown in Fig. 3 of the drawings. Said holder is formed with a central longitudinal channel d, preferably rectangular in cross-section, from its outer end part way the length of the holder, as shown in Fig. 3 of the drawings. At the inner end of the channel d is a seat 11 for the nut 12, and at opposite sides of the said nut-seat are apertures a a through the sides of the holder to aitord access to the nut for turning the same. From the nut-seat to the hinged end of the holder D is another channel d'in the center of the holder and of circular form in cross-sea tion.

0 denotes the adj ustable jaw, which is rigid on the end of the shank O, which slides longitudinally in the channel d of the holder D, and is fitted closely to said channel. From the inner end of the shank 0 extends ascrew e, which passes through the nut 12 and into the channel cl. By turning said nut the shank C is caused to move inward or outward, and thus the jaw C is adjusted to the proper distance from the jawB to firmly grip between them the nut or other article to be turned by the wrench. The holder D is held normally resting against the back of the jaw B and upon the top of the stock A by means of a spring 0, secured at one end of the stock A or to the hinge-pin h, and pressing withits free end against the back of the holder D.

bolt or screw the handle I is swung in the direction indicated by an arrow in Fig. 1 of the drawings, and in said movement the grip of the jaw C on the nut tends to draw the holder D against the jaw B. In swinging the handle I in the opposite direction to obtain a new hold on the nut the holder D yields to the back'pressure of the nut and allows the jaw O to freely slip over the corners of the nut, and when the jaws are brought to the requisite position on the nut the spring 0 forces the holder D up against the back of the jaw B, and thus the jaws automatically assume their gripping position.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The improved wrench consisting of the stock A, formed with the stationary jaw B and with the rearwardly-projecting heel B at the base of said jaw, the holder D, pivoted at the rear of its lower end to the heel B and resting with said end normally directlyon the said seat, substantially as described and I0 top of the stock A and formed with the rectshown. V angular longitudinal channel d, nut-seat i, In testimony whereofIhave hereunto signed and apertures a abat opposite sides of said my name this 1st day of March, 1890. nut-seat, the nut in said seat, the 'aW O, Y 5 having rigid thereon the shank 0', slid ing in RICHARD MYLAND SMITH' the channel (1 and terminating with the screw Witnesses: e, passing through the nut 19, and the spring 7 C. E. BLOOM, c, holding the holder D normally on its afore- V. P. HINDS. 

